package CTable;

public interface CMap {
 /**
  * @param row
  *            logical cell row
  * @param column
  *            logical cell column
  * @return number of columns spanned a cell
  */
 int span(int row, int column);
 /**
  * @param row
  *            logical cell row
  * @param column
  *            logical cell column
  * @return the index of a visible cell covering a logical cell
  */
 int visibleCell(int row, int column);
}